JSON to TypeScript

Convert JSON to TypeScript interface or type definitions. Stop writing types manually from API responses.

Runs entirely in your browser — nothing is uploaded or stored on any server.

About JSON to TypeScript

Updated Mar 2025

Paste any JSON object and instantly get the equivalent TypeScript interface with proper types for strings, numbers, booleans, arrays, and nested objects. Supports optional fields, arrays of objects, and union types. Essential for TypeScript developers working with REST APIs.

Frequently Asked Questions

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